Plasma levels of CXCL-4, CXCL-13, CXCL-16 and CCL-24 chemokines in the peripheral, placental, and cord blood from PM+ women (PM with chronic and PM with acute infections) and PM- women (PM negative with submicroscopic peripheral blood infection) as well as healthy controls are presented in Fig 1. This evidence concerns the gene CXCL13 and infection.